The tests were run by playing videos from the laptop's hard drive and also browsing the web. The 13-inch MacBook Pro with Retina display came out on top, lasting 30 minutes longer than the closest Windows 8 laptop in basic web browsing. The MacBook lasted six hours, while the Acer Aspire timeline Ultra M5-581T lasted 5.5 hours. The Acer did have a screen that was two inches larger, but that screen does not support a Retina-type display. When videos were watched on both laptops, the MacBook lasted an hour longer than the Acer. The Samsung Series 3 Chromebook came in a distant third at three hours and 44 minutes.